Brian and Stewie Travel Back to 1999 to See the 'Family Guy' Pilot (VIDEO)

Originally, this week's episode of 'Family Guy' (Sun., 9PM ET on FOX) was going to be the next installment in the 'Road to...' episodes featuring Brian and Stewie. Instead, Stewie's time machine brought the duo 'Back to the Pilot.'

It was certainly a fun look back at the early animation from 1999, as well as the slightly different voices used for several of the main characters, and of course Lacey Chabert voicing Meg. But it was just too tempting for Brian to alter the past, and when they got back to the present, they discovered he'd single-handedly thwarted the 9/11 attacks.

Unfortunately, this led to a second Civil War, and five years down the road the world is a post-apocalyptic wasteland ... but it's not all bad. Cleveland's back!